<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容">
            <el-button slot="append"
                       icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 列表区域 -->
      <!-- 表格区域 -->
      <el-table :data="goodsList"
                border
                stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称"
                         prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)"
                         prop="goods_price"
                         width="110px"></el-table-column>
        <el-table-column label="商品重量"
                         prop="goods_weight"
                         width="95px"></el-table-column>
        <el-table-column label="创建时间"
                         prop="add_time"
                         width="200px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="125px">
          <template slot-scope="scope">
            <el-button size="mini"
                       type="primary"
                       icon="el-icon-edit"></el-button>
            <el-button size="mini"
                       type="danger"
                       icon="el-icon-delete"
                       @click="removeGoods(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
    <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[3, 5, 10, 15]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
    </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 保存商品列表信息
      goodsList: [],
      // 数据总条数
      total: 0
    }
  },
  // 生命周期函数
  created() {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList() {
      // 跟据分页获取对应的商品列表
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }
      //   console.log(res.data)
      this.$message.success('获取商品列表成功！')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      // 当页号发生改变时，更改pagesize，重新请求
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      // 当页码发生改变时，更改pagesize，重新请求
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 事件处理函数编写
    async removeGoods(goodsId) {
      // 根据id删除对应的参数或属性
      // 弹窗提示用户是否要删除
      const confirmResult = await this.$confirm(
        '请问是否要删除改商品',
        '删除提示',
        {
          confirmButtonText: '确认删除',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // 如果用户点击了确认，则confirmResult 为 'confirm'
      // 如果用户点击取消，则confirmResult 获取的就是catch的错误消息'cancel'
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      // 没有取消就是要删除，发送请求完成删除
      const { data: res } = await this.$http.delete(`goods/${goodsId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败')
      }
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    goAddpage() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>
